/**
 * Copyright (C) 2007 The AsyncMail Group <asyncmail@googlegroups.com>
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *         http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.googlecode.asyncmail.smtpserver.handler.esmtp;

import org.acegisecurity.AuthenticationException;
import org.acegisecurity.AuthenticationManager;
import org.acegisecurity.providers.UsernamePasswordAuthenticationToken;
import org.apache.commons.logging.Log;
import org.springframework.beans.factory.annotation.Required;

import com.googlecode.asyncmail.smtpserver.SMTPSession;
import com.googlecode.asyncmail.smtpserver.hook.HookResult;
import com.googlecode.asyncmail.smtpserver.hook.HookReturnCode;

public class AcegiAuthHook implements AuthHook {

    private Log logger;

    private AuthenticationManager authenticationManager;

    protected Log getLogger() {
        return logger;
    }

    @Required
    public void setLogger(Log logger) {
        this.logger = logger;
    }

    public AuthenticationManager getAuthenticationManager() {
        return authenticationManager;
    }

    @Required
    public void setAuthenticationManager(
            AuthenticationManager authenticationManager) {
        this.authenticationManager = authenticationManager;
    }

    public HookResult doAuth(SMTPSession session, String username,
            String password) {
        UsernamePasswordAuthenticationToken token = new UsernamePasswordAuthenticationToken(
                username, password);
        try {
            getAuthenticationManager().authenticate(token);
            // TODO store the authentication in the security context
            return new HookResult(HookReturnCode.OK);
        } catch (AuthenticationException e) {
            getLogger().debug(e);
            return new HookResult(HookReturnCode.DENY);
        }
    }

}
